The IUPAC name of an element is unnilunium.  Its atomic number is 

Following rules are proposed by IUPAC for naming the elements with atomic number more than 100.

 The names are derived by using root words for the three digits in the atomic number of the element and adding the suffix – ium

unnilunium = 101 (symbol is Unu)

The name of the element starts with a small letter.  While the symbol of an element starts with a capital letter.  The names are written as a complete word.